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The molarity of a solution obtained by m...

The molarity of a solution obtained by mixing 750 mL of 0.5 M HCl with 250 mL of 2 M HCl will be

A

`0.875 M`

B

`1.00 M`

C

`1.75 M`

D

`0.0975 M`

Text Solution

Verified by Experts

The correct Answer is:
A
From the formula, `m_(f) = (M_(1)V_(1) + M_(2)V_(2))/(V_(1)+V_(2))`
Given, `V_(2) = 750 mL, M_(1) = 0.5 M`
`V_(2) = 250 mL, M_(2) = 2M`
`= (750 xx 0.5 +250 xx 2)/(750+250) = (875)/(1000) = 0.875 M`
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